| Autor: |
Legouix, J. P., Pierson, A. |
| Zdroj: |
Journal of the Acoustical Society of America; 1973, Vol. 54 Issue 1, p16-21, 6p |
| Abstrakt: |
The characteristics of the short-term poststimulatory depression (hysteresis) have been studied by recording cochlear microphonics (CM) with differential electrodes at several locations along the guinea-pig cochlea. The depression appears, with high-intensity tones, in regions where the vibratory amplitude of the cochlear partition is the largest. It is accompanied by a negative summating potential (SP) whose time course follows exactly the variation of the CM amplitude and in particular outlasts the presentation of the stimulus. At the same time, complex hydrodynamic effects are observed by microscopy. They result in a flow of perilymph from scala vestibuli toward the vestibular spaces, and the membranes of the cochlear partition are displaced in an extreme position. These displacements might provide a protective mechanism against acoustic trauma. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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